The Victor Electronic Mouse Trap boasts a 100 percent kill rate using high-voltage shocking technology that kills mice in seconds. Advanced circuitry senses when mice enter the trap and holds them in place with a patented tunnel and column design. This prevents mice from snatching the bait and making off with it. When a trapped mouse makes contact with the metal plates, a high-voltage shock kills it in seconds. A light is then activated to alert users to dispose of the mouse.